Google Play Music

Pros

Simple setup.
All Access subscription lets you listen to any music in Google's large online library.
Clear Web player interface.
Radio allows unlimited skips and has good taste-prediction.
Full Android functionality.
High-quality 320Kbps tracks.
20,000 song digital locker.

Cons

No iPhone or iPad support for All Access.
No free add-supported version of All Access.
Internet radio channels run out of music.
No connection with home-theater set-tops like Apple TV and Xbox 360.

Bottom Line

Google Play Music is now a truly full-feature service, with scan-and-match to save you from uploading, a music store, and best of all, an unlimited streaming option.